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Full Ripe Banana with Dark Patches Combats Abnormal Cells and Cancer - Facts Analysis Full Ripe Banana with Dark Patches Combats Abnormal Cells and Cancer - Facts Analysis Hot

Full Ripe Banana with Dark Patches Combats Abnormal Cells and Cancer - Facts Analysis

Story: 
According to Japanese Scientific Research, full ripe banana with dark patches on yellow skin produces a substance called TNF (Tumor Necrosis Factor) which has the ability to combat abnormal cells. The more darker patches it has the higher will be its immunity enhancement quality; Hence, the riper the banana the better the anti-cancer quality. Yellow skin banana with dark spots on it is 8x more effective in enhancing the property of white blood cells than green skin version.
Eating 1-2 banana/s a day increases immunity.
Please pass/share and stay healthy. 

Hoax or Fact:

Fact.

Analysis:
It is a fact that nutrient content of fruits change slightly as they ripen. As a banana ripens and turns yellow, its levels of antioxidants increases. These antioxidants in ripe bananas protect your body against cancer and heart diseases. But while overripe bananas certainly have nutritional value, they also lose some benefits. In full ripe bananas with dark spots on skin, the starch content changes to simple sugars that are easier to digest and may raise your blood glucose levels quickly, but it could be harmful for people with diabetes. Also, the micronutrients like vitamins and minerals decrease as the bananas ripen.

Tumor Necrosis Factor(TNF-α) is a cytokine, substances secreted by certain cells of the immune system that have an effect on other cells. This is indeed helpful in fighting abnormal turmor cells in body. Research done on ripening bananas has proved that the levels of TNF-α induction increased markedly with dark spots on skin before the entire banana peel turned brown. The research concluded that the activity of banana was comparable to that of Lentinan, a chemical immunostimulant that is intravenously administered as an anti-cancer agent. So, ripe banana can act as an anti-cancer agent by stimulating the production of white blood cells in the human cell line.

Both green and yellow bananas are high fiber foods rich in potassium, vitamin B6, fiber, and vitamin C. They have high calorific value because of their high sugar levels. A medium sized banana provides about 105 calories. Also, bananas are very good for our Gastro-Intestinal tract and aid in digestion. Therefore, eating one or two bananas is indeed good for health. Once bananas ripen fully, store them in the refrigerator to minimize further vitamin loss. Fresh bananas with brown patches on the skin are ripe enough to eat immediately. Make sure to avoid over-ripe bananas whose skin has turned brown or split open.

And yes, you can share this healthy information with everyone.

References:
Nutritional value of Bananas
Nutritional benefits of Bananas
Japanese research regarding Bananas
Tumor Necrosis Factor
Lentinan

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Full Ripe Banana with Dark Patches Combats Abnormal Cells and Cancer - Facts Analysis 2012-09-02 17:39:39 Keith
Commented by Keith    September 02, 2012

Professor

Graduate student is correct. The monoamines in the banana are what is being analyzed in this paper, bananas do not make TNF. I doubt the levels ingested are very significant biologically, your body makes these as neurohormones, and your GI systems even releases these into blood when you eat anything. The work was done using cultured cells only, no work in animals or humans. Further, TNF can have either injurious or good effects, depending upon where is it released and the state of a tissue. There is no peer reviewed data that eating bananas will fight cancer. The effect of heat on the banana is minimal since TNF, a protein, is made in the person eating the banana. There may be some reduction of monoamines with baking, but they are generally not very heat labile. It is very dangerous to ascribe medical benefits to natural products as 1) they also have adverse effects, 2) without double blind studies of efficacy and safety, they are often not effective, 3) quality and concentration of effective agents vary and are not controlled, and 4) people may try these things in lieu of medical therapy and deaths have resulted. Healthy diet is a big part of maintaining health, but bananas are not going to cure or stave off cancer. The original article on hoax or fact and the editor's reply to the question in heat are both incorrect; you guys need to do better.

Full Ripe Banana with Dark Patches Combats Abnormal Cells and Cancer - Facts Analysis 2012-08-23 02:49:10 Richard Thorpe
Commented by Richard Thorpe    August 23, 2012

Grad Student

Wrong. Bananas contain no TNF-alpha. Bananas produce small amounts of serotonin (5-hydroxy tryptamine) and dopamine, depending on their stage of ripeness. These can have a stimulatory effect on neutrophils and macrophages in a living organism, and these can in turn produce the touted TNF-a, Interleukin-12 (IL-12) and other cytokines. In this role serotonin and dopamine are said to serve as a "biological response modifier" (BRM). In plain English, the stuff in ripe bananas can (but not necessarily will) stimulate a subset of white blood cells to produce chemical signals to deal with a variety of threats. Here is a reference to the original article that is so badly misquoted in the popular press and is going viral on the internet: Food Sci. Technol. Res., 15 (3), 275 – 282, 2009.

Full Ripe Banana with Dark Patches Combats Abnormal Cells and Cancer - Facts Analysis 2012-08-04 00:33:00 Doug brown
Commented by Doug brown    August 04, 2012

Foreman

I'm wondering now, is there any research or available information as to whether heat has any effect on TNF. For instance , if I took those overly ripe bananas and used them to make banana bread. Please address.

Editor's reply

According to this research,
http://www.ncbi.nlm.nih.gov/pubmed/1425922

negative-feedback mechanism exists between elevated temperature and lipopolysaccharide-induced TNF-alpha synthesis.

That means heat has negative effect on TNF production.

(a) macrophages exposed to heat shock synthesized the major 70- and 90-kDa heat-shock proteins, and (b) chemical inducers of the heat-shock response were also effective inhibitors of TNF-alpha release.